The Kingdom of Heaven has been a treasure that has been buried for a very long time, through thousands of years and one form of ignorance, in the form of the neo Pharisee religion, called European Christianity and other forms of ignorance, in the forms of materialistic science, materialism, obsession with the flesh and consumerism, are doing their best to keep this treasure buried.
This is a statement by Joel S. Goldsmith in the book The Thunder of Silence, page 153. Joel S. Goldsmith put this in such an elegant way that it had to be shared here.
"God is hidden under hundreds of generations of mortality. God is hidden under hundreds of generations of people steeped in spiritual ignorance. God is hidden under all the layers of humanness, self-righteousness, self-protection, under all the selfs that we have built around and within ourselves making it almost impossible for us to reach Him. How then are we going to reach God? How, but in quietness and in confidence, in the stillness and the Silence? How, but by learning to abide in a quitness within, by being still? Then we shall contact the divine Selfhood which is within our own being, and when we establish contact with It, we will be in communion with the Father within just as the Master was."
Matthew, 13:44, “The kingdom of heaven is like treasure hidden in a field. When a man found it, he hid it again, and then in his joy went and sold all he had and bought that field." Selling all he had means he got rid of his physical illusions and took the spirit instead.